Whirlpool MH1170XSB Specifications download pdf (Page 25)

Report Identification 6643 Autumn Sunset Lane Spring, TX 77379

I=Inspected NI=Not Inspected NP=Not Present D=Deficiency

I NI NP D

REI 7-2 (8/09) Page 25 of 41 J&R Inspect-It

Judging the sufficiency or efficiency of heating and/or cooling of air conditioning requires a technical

evaluation of the structures heating/coiling system by a licensed HVAC company and therefore is beyond the

scope of this inspection. We urge you to evaluate these systems prior to closing.

Units should be serviced annually, condenser and evaporator coils cleaned, refrigerant levels checked and the

primary and secondary condensate drain lines checked for blockages.

Recent US standards for A/C systems in effect as of January 2006 require newly installed systems to adhere to a

SEER 13 energy rating guidelines. Manufacturers can no longer manufacture systems with a SEER rating less

then 13. Systems currently in inventory with a less then SEER 13 rating can be repaired or installed until parts

are no longer available. Manufactures anticipate available systems for new installation until the summer of

2006 and spare parts available for repairs for a number of years. Some manufacturers have indicated that new

SEER 13 systems will be physically larger then prior systems and require reconfiguration of replacement

systems; some manufactures have indicated that new system will be no larger and in some cases smaller then

older systems.

For any problem noted under issues, a complete evaluation of the HVAC system should be performed prior to

close.

The Air conditioning compressor/condenser is located on the left rear side of the home; evaporator coil is

located in the downstairs and upstairs.

The downstairs A/C condenser unit is manufactured by Rheem, in 10/2006, Model No: RAPC-036JBZ, Serial

No: 6992M430603566, capacity is 3 tons, Max/Min breaker size is 30 - amps.

The upstairs A/C condenser unit is manufactured by Rheem, Model No: RAPC-036JBZ, Serial No:

6992M430603567, capacity is 3 tons, Max/Min breaker size is 30 - amps.

The air conditioner was activated to check the operation of the fan motor and the compressor, both of which

appear to be in serviceable condition. As a detailed review of the cooling capacity of this unit is beyond the

scope of this inspection, we make no warranty as to the system's adequacy. If the units have not been serviced in

the last year, recommend having a complete system check by a licensed HVAC technician.

The downstairs temperature rise/differential is 17 degrees, taken between the interior return of 68 degrees and

the supply air of 51 degrees, which is within the 15 to 22 degree normal operating range.

The upstairs temperature rise/differential is 16 degrees, taken between the interior return of 70 degrees and the

supply air of 54 degrees, which is within the 15 to 22 degree normal operating range.

The temperature differential between the room supply and home return air registers was measured using an

infrared temperature device. I look for a temperature differential or temperature drop of at least 15°-20° will

normally give satisfactory cooling and dehumidification of the home. Temperature drops across the evaporator

coil should be higher, but does not reflect the effect the duct system configuration may have on the temperature

drop inside the home from the supply registers. What this means is the evaporator coil may be cooling properly,

but if the duct system cannot provide the cold conditioned air into the rooms at the proper temperature and with

adequate air volume, the total cooling system is not performing adequately.

When the supply ducts in the attic travel very long distances, lower temperature drops can be anticipated

between the return air register and the supply registers because of heat gain over the length of the air ducts.

Sharp bends in the ducts can reduce air flow and result in warmer supply air temperatures. Just because this may

have a newer high efficiency systems does not necessarily achieve high temperature differentials. The

temperature drop can vary with the type and size of the cooling equipment, outdoor air temperature and the

blower speed. Equipment sizing, refrigerant pressure and blower speed are not part of this inspection. If you

require a full system evaluation of the cooling system such as testing the system with pressure gauges, a licensed

HVAC technician should be called.

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Whirlpool MH1170XSB Specifications Page 25

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